The soft water through softening process must be used to avoid its scale-formation blocking the waterway which may lead to unnecessary fault.
必须使用经过软化处理的软水，以免结垢堵塞水路，引起不必要的故障。
The quantitative analysis of the economic growth effect can help us avoid some unnecessary problems in the use of public health expenditure, and decide the proper scale of public health expenditure.
在本文的分析中，作者从总体上分析了我国公共卫生支出的规模和结构，并对我国公共卫生支出的技术效率和配置效率、公平效应、经济增长效应以及人力资本效应进行了系统分析。
Scale back your expectations just a bit so you won't have to face unnecessary disappointment.
减少你的期望值也许就不会面临不需要的麻烦了。
Scale back your expectations just a bit so you won't have to face unnecessary disappointment.
减少你的期望值也许就不会面临不需要的麻烦了。
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